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How to turn off INFO logging in Spark?
I installed Spark using the AWS EC2 guide and I can launch the program fine using the bin/pyspark script to get to the spark prompt and can also do the Quick Start quide successfully.
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Using logging in multiple modules
...logging
logger = logging.getLogger(__name__)
near the top of the module, and then in other code in the module do e.g.
logger.debug('My message with %s', 'variable data')
If you need to subdivide logging activity inside a module, use e.g.
loggerA = logging.getLogger(__name__ + '.A')
loggerB = l...
Loop inside React JSX
... as an argument – leading to a syntax error.
But you can make an array, and then pass that in as an argument:
var rows = [];
for (var i = 0; i < numrows; i++) {
rows.push(ObjectRow());
}
return tbody(rows);
You can use basically the same structure when working with JSX:
var rows = []...
What is a 'thunk'?
I've seen it used in programming (specifically in the C++ domain) and have no idea what it is. Presumably it is a design pattern, but I could be wrong. Can anyone give a good example of a thunk?
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CSS selector for other than the first child and last child
...it possible to select all the other children except for the :first-child and the :last-child ? I know there is a :not() selector but it doesn't work with more than one not in the parentheses. This is what I have:
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Git branch diverged after rebase
...se, you're changing the parent of the oldest local commit on your branch - and thus changing the commit hashes of all of your local commits, since this change bubbles up through the commits transitively.
Since you'd already pushed the branch, you should have merged in the source branch, rather than...
ImportError: No module named requests
...requests (or pip3 install requests for python3) if you have pip installed and Pip.exe added to the Path Environment Variable. If pip is installed but not in your path you can use python -m pip install requests (or python3 -m pip install requests for python3)
Alternatively from a cmd prompt, use &g...
Error 1022 - Can't write; duplicate key in table
I'm getting a 1022 error regarding duplicate keys on create table command. Having looked at the query, I can't understand where the duplication is taking place. Can anyone else see it?
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Implicit type conversion rules in C++ operators
...atch the other.
The type of the result of the operation is the same as operands (after conversion).
If either is long double the other is promoted to long double
If either is double the other is promoted to double
If either is ...
Difference between a clickable ImageView and ImageButton
...utton.onSetAlpha() method always returns false, scaleType is set to center and it's always inflated as focusable.
Here's ImageButton's default style:
<style name="Widget.ImageButton">
<item name="android:focusable">true</item>
<item name="android:clickable">true&...